The OFIS-BH Series 3P (Three-Pole) Miniature Circuit Breaker is a core protective device engineered for three-phase low-voltage distribution systems. Manufactured in strict compliance with international electrotechnical standards, its primary function is to deliver precise overload and short-circuit protection for three-phase circuits and connected equipment. Its 3-pole common trip mechanism ensures the simultaneous disconnection of all three phase conductors in response to a fault on any single phase. This effectively prevents equipment damage, such as burnout of three-phase motors, caused by a single-phasing condition, solidifying its role as a critical component for ensuring the safety and stable operation of three-phase power systems.